She named it endless because once the fragrance is gone; you can just add more and heat it on a candle warmer. Of course, you could also melt the wax away and use the jar as votive holder, flower vase or pencil holder.
I love the vintage images she chose to transfer onto the jars and the glass paint was also a nice touch. This would be an easy project to personalize for friends or holidays. I’d love to create one for Christmas using a snow man and Jack Frost (peppermint with a hint of vanilla) fragrance oil.
See Weekend DIY: How to Make an Endless Candle for full project instructions.